Control device and method for control of broadcast receiver

ABSTRACT

A control device is provided. The control device includes a first communication interface unit which transmits a control command in a first communication mode which uses a bi-directional wireless communication, a second communication interface unit which transmits a control command in a second communication mode which uses a unidirectional wireless communication, a state determination unit which determines a communication mode of the control device, a user interface unit which displays a user interface window which corresponds to a determined communication mode and receives the control command with respect to a broadcast receiver and a control unit which transmits the received control command according to the determined communication mode.

CROSS-REFERENCE TO RELATED APPLICATION

This application is a Continuation Application of U.S. application Ser.No. 14/193,850, filed on Feb. 28, 2014, which is a ContinuationApplication of U.S. application Ser. No. 13/241,360, filed on Sep. 23,2011, which was issued U.S. Pat. No. 8,687,131 on Apr. 1, 2014, whichclaims priority from Korean Patent Application No. 10-2010-0140240,filed on Dec. 31, 2010, in the Korean Intellectual Property Office, thedisclosure of which is incorporated herein by reference in its entirety.

BACKGROUND 1. Field

Apparatuses and methods consistent with exemplary embodiments relate toa control device and a method for controlling of a broadcast receiver,and more particularly, to a control device and a method for controllinga broadcast receiver with the control device by using a unidirectionalwireless communication when the broadcast receiver cannot be controlledby a bi-directional wireless communication.

2. Description of the Related Art

A broadcast receiver is a device receiving digital satellitebroadcasting. The broadcast receiver converts audio/video signals inputfrom a digital broadcasting or an analog broadcasting transmitted from abroadcast station into a TS (transport stream) signal and displays theTS signal or transmits the TS signal to an external display device. Forexample, the broadcast receiver may be an IPTV (Internet ProtocolTelevision) including a digital TV and a Video On Demand player and aset-top box.

Such broadcast receiver is usually controlled by a control device suchas a remote control, but recently, a technology has developed so thatthe broadcast receiver can be controlled by a general portable deviceusing wireless-fidelity (Wi-Fi).

In the case of a portable device using Wi-Fi, a sleep mode is used toreduce battery consumption. However, when the portable device is in asleep mode, a waiting time for using the Wi-Fi is necessary in order tocontrol the broadcast receiver. Accordingly, a device demanding a promptaction by a user (such as a remote controller) may be inconvenient for auser.

SUMMARY

Exemplary embodiments address at least the above problems and/ordisadvantages and other disadvantages not described above. Also, theexemplary embodiments are not required to overcome the disadvantagesdescribed above, and an exemplary embodiment may not overcome any of theproblems described above.

The exemplary embodiments provide a control device and a method ofcontrolling a broadcast receiver with the control device by using aunidirectional wireless communication when the broadcast receiver cannotbe controlled by a bi-directional wireless communication.

According to an exemplary embodiment, a control device which controls abroadcast receiver includes a first communication interface unit whichtransmits a control command in a first communication mode which uses abi-directional wireless communication, a second communication interfaceunit which transmits a control command in a second communication modewhich uses a unidirectional wireless communication, a statedetermination unit which determines a communication mode of the controldevice, a user interface unit which displays a user interface windowwhich corresponds to the determined communication mode and receives acontrol command with respect to the broadcast receiver, and a controlunit which transmits the received control command according to thedetermined communication mode.

The state determination unit may determine the communication mode of thecontrol device to be a second communication mode if it is impossible forthe control device to communicate with the broadcast receiver via thefirst communication mode and determines the communication mode of thecontrol device to be a first communication mode if it is possible forthe control device to communicate with the broadcast receiver via thefirst communication mode.

The state determination unit may determine that the first communicationmode is not in a communication able state if the control device is in asleep mode or a wake-up mode.

The user interface unit where a user selects the first communicationmode or the second communication mode and the state determination unitmay determine the communication mode of the selected communication modeto be the communication mode of the control device.

The control device may further include a storing unit which stores atleast one user interface window between a first user interface windowwhich corresponds to a first communication mode and a second userinterface window which corresponds to a second communication mode, andthe second user interface window comprises a selection region in orderto receive a mode conversion command into the first communication mode.

The user interface unit may indicate that the control device operates ina first communication mode, if the first communication mode is in acommunication able state while the second user interface window is beingdisplayed.

The user interface unit may display a same user interface window asdisplayed before the control device entered into a sleep mode or an offmode, if the determined control mode is a first communication mode.

The second interface unit may be a low-power communication interfaceunit which operates at a lower power than a first interface unit.

The first communication mode may become a non-communication able stateif the control device entered into a sleep mode.

The bi-directional wireless communication may be at least one among aWi-Fi, radio frequency (RF), Bluetooth, and Wireless high-definitionmultimedia interface-consumer electronic control (HDMI-CEC), and theunidirectional wireless communication is an infrared data association.

According to an exemplary embodiment, there is provided a method ofcontrolling a broadcast receiver in a control device comprisingdetermining a communication mode of the control device between a firstcommunication mode which uses a bi-directional wireless communicationand a second communication mode which uses a unidirectional wirelesscommunication, displaying a user interface window which corresponds tothe determined communication mode, receiving a control command withrespect to the broadcast receiver via the displayed user interfacewindow, and transmitting the input control command to the broadcastreceiver according to the determined communication mode.

The determining the communication mode may determine a communicationmode of the control device to be a second communication mode if it isimpossible for the control device to communicate with the broadcastreceiver via the first communication mode, and determine a communicationmode of the control device to be a first communication mode if it ispossible for the control device to communicate with the broadcastreceiver via the first communication mode.

The determining the communication mode may determine that the firstcommunication mode is in a non-communication able state if the controldevice is in a sleep mode or a wake-up mode.

The determining the communication mode may determine a communicationmode which is selected by a user as a communication mode of the controldevice.

The displaying the user interface window may display at least onepre-stored user interface window between a first user interface windowwhich corresponds to a first communication mode and a second userinterface window which corresponds to a second communication mode, andcomprise a selection area in order to receive a mode conversion commandinto the first communication mode.

The method for controlling the broadcast receiver further includesindicating that it is possible to operate in a first communication modeif the first communication mode is in a communication able state whilethe second user interface window is displayed.

The displaying the user interface window may display a user interfacewindow which is equal to a user interface window which is displayed bythe control device before entering into one mode between a sleep modeand an off mode, if the determined control mode is a first communicationmode.

The second communication mode may use a communication interface whichoperates at a lower power than a first communication mode.

The method for controlling the broadcast receiver may further includethe first communication mode becoming a non-communication able state ifthe control device enters into a sleep mode.

The bi-directional wireless communication may be at least one among RF,Bluetooth, and Wireless HDMI-CEC, and the unidirectional wirelesscommunication may be an Infrared Data Association.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and/or other aspects will be more apparent by describingcertain exemplary embodiments with reference to the accompanyingdrawings, in which:

FIG. 1 is a block diagram illustrating a configuration of a home networksystem according to an exemplary embodiment:

FIG. 2 is a view illustrating an example of a connection of a homenetwork system 1000 according to an exemplary embodiment;

FIGS. 3 to 5 are views illustrating an example of a user interfacewindow which may be displayed on a control device;

FIG. 6 is a flowchart to explain a method of controlling a broadcastreceiver according to an exemplary embodiment.

DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS

Certain exemplary embodiments will now be described in greater detailwith reference to the accompanying drawings.

In the following description, the same drawing reference numerals areused for the same elements even in different drawings. The mattersdefined in the description, such as detailed construction and elements,are provided to assist in a comprehensive understanding of the exemplaryembodiments. Thus, it is apparent that the exemplary embodiments can becarried out without those specifically defined matters. Also, well-knownfunctions or constructions are not described in detail since they wouldobscure the exemplary embodiments with unnecessary detail.

FIG. 1 is a block diagram illustrating a configuration of a home networksystem according to an exemplary embodiment.

Referring to FIG. 1, the home network system 1000 comprises a broadcastreceiver 100 and a control device 200. The broadcast receiver 100 is adevice providing a user with an image or audio/video information and maycomprise a digital TV, a set-top box, a PC, a notebook, and a personalmedia player (PMP). Specifically, the broadcast receiver 100 maycomprise a display unit 110, a storing unit 120, a first communicationinterface unit 130, a second communication interface unit 140, and acontrol unit 150.

The display unit 110 may display information provided from the broadcastreceiver 100. The display unit 110 may include a device, such as a touchpad, which is capable of receiving and outputting data and may be animage display device such as a liquid crystal display (LCD), a plasmadisplay panel (PDP), and a cathode ray tube (CRT). Accordingly, a usermay view on a screen of the device, information received from thebroadcast receiver 100.

If the broadcast receiver 100 is a device such as a digital TV, thedisplay unit 110 may be an internal component of the digital TV and ifthe broadcast receiver 100 is a set-top box, the display unit 110 may bean external device (for example: a TV or a monitor connected to theset-top box).

The storing unit 120 may store content corresponding to a variety ofservices provided by the broadcast receiver 100. The storing unit 120may be an internal storing medium and an external storing medium of thebroadcast receiver 100 such as a Removable Disk including a USB memory,a storing medium connected to a separate host, and a web server via anetwork.

The first communication interface unit 130 receives a control commandvia a bi-directional wireless communication. Specifically, the firstcommunication interface unit 130 may form a link with the firstcommunication interface unit 210 of the control device 200, and transmita variety of information which the control device 200 requests, orreceive the control command of a user from the control device 200.Herein, the bi-directional wireless communication may include allexisting communication technologies such as BT (Bluetooth). RF, Wi-Fi,HDMI-CEC, and Wireless HDMI-CEC and all bi-directional wirelesscommunication technologies in the future.

The second communication interface unit 140 receives a control commandvia a unidirectional wireless communication. Specifically, the secondcommunication unit 140 may receive the control command using theunidirectional wireless communication of the second communicationinterface unit 220 of the control device 200. Herein, the unidirectionalwireless communication may include all existing communicationtechnologies such as Infrared Data Association and all unidirectionalwireless technologies in the future.

The control unit 150 controls each configuration in the broadcastreceiver 100. Specifically, the control unit 150 may execute a serviceor operation in response to a control command received from the firstcommunication interface unit 130 or the second communication interfaceunit 140, thereby providing a service or executing the control command.For example, if the broadcast receiver 100 receives a ‘TV channel up’control command from the control device 200, the control unit 150 mayexecute the control command and change the channel of the TV.

The control unit 150 may transmit information related to a currentlyprovided service to the control device 200. Specifically, the controlunit 150, may transmit information which will be helpful for a user,(for example, channel information, current volume, play time, remainingplay time, current time, and Electronic Program Guide (EPG)), to thecontrol device 200 in a process of controlling operations of thebroadcast receiver 100. Such an operation of transmitting informationrelated to the service may be performed via the first communicationinterface unit 130.

The control device 200 is a device which may control the broadcastreceiver 100 by using the bi-directional wireless communication or theunidirectional wireless communication and may comprise a remote control,a mobile phone, an MP3, a PMP, a navigation, and a digital frame.Specifically, the control device 200 may include the first communicationinterface unit 210, the second communication interface unit 220, a userinterface unit 230, a storing unit 240, a state determination unit 250,and a control unit 260.

The first communication interface unit 210 transmits a control commandin a first communication mode using the bi-directional wirelesscommunication. Specifically, the first communication interface unit 210may form a link for performing the bi-directional wireless communicationwith the broadcast receiver 100 and transmit a control command receivedfrom a user interface unit 230, which will be described later, to thebroadcast receiver 100 via the formed link. In addition, the firstcommunication interface unit 210 may receive information which will beuseful for a user from the broadcast receiver 100.

The second communication interface unit 220 transmits a control commandin a second communication mode using the unidirectional wirelesscommunication. Specifically, if the first communication interface unit210 is not in a communication able state, the second communicationinterface unit 220 may transmit a control command received via a userinterface unit 230 which will be described later. The control commandtransmitted via the second communication interface unit 220 is receivedfrom the second communication interface unit 140 of the broadcastreceiver 100. Herein, since the second communication interface unit 220uses the unidirectional wireless communication, the second communicationinterface unit 220 operates at a lower power than the firstcommunication interface unit 210 using the bi-directional wirelesscommunication.

The user interface unit 230 displays a user interface (UI) window forselecting a communication mode. Specifically, the user interface unit230 provides a plurality of function keys that a user may set or selecta variety of functions provided by the broadcast receiver 100 and maydisplay the user interface window for selecting one between the firstcommunication mode or the second communication mode. The user interfaceunit 230 may comprise a device, such as a touch pad, allowing theselection of the communication mode as well as the input of controlcommands. Furthermore, the device may include a keypad which can becoupled to a displaying device. Accordingly, a user may select onecommunication mode. Such an operation of selecting a communication modemay be automatically performed by a state determination unit 250 whichwill be described later.

The user interface unit 230 may display a user interface windowaccording to the type of communication mode. Specifically, the userinterface unit 230 may display the user interface window according tothe determined communication mode performed by the state determinationunit 250 which will be described later, or selected by a user. Forexample, if the control device 200 operates in the second communicationmode, the user interface unit 230 may display the second user interfacewindow receiving relatively a simple control command only. Herein, thesecond user interface window may include a selection region forreceiving a command to convert a current communication mode into thefirst communication mode from a user. A specific shape of the seconduser interface window will be described later with reference to FIGS. 3and 4.

The user interface unit 230 may indicate that the control device 200 mayoperate in the first communication mode, if the first communication modeis in a communication able state while the second user interface windowis displayed. Specifically, if it is determined that the communicationmode is converted from the second communication mode into the firstcommunication mode by the state determination unit 250 which will bedescribed later, the user interface unit 230 may indicate that thebroadcast receiver 100 may be controlled using the first communicationmode. In addition, the user interface unit 230 may be automaticallyconverted into the first interface window and displayed as such withoutadditional information displaying operations.

If the control device 200 operates in the first communication mode, theuser interface unit 230 may display the first user interface windowcorresponding to the first communication mode. The first user interfacewindow may include a user interface window according to the operationmode of the broadcast receiver 100. For example, according to a featureof the broadcast receiver 100, the user interface window may display auser interface window responding to a variety of modes such as a TVcontrol mode, a VTR control mode, and a search control mode. Namely, ifthe user watches a TV by using a broadcast receiver, the user interfaceunit 230 may display the specialized user interface window incontrolling a TV. In case where the user performs an internet search byusing the broadcast receiver, the user interface unit 230 may displaythe specialized user interface window for internet searches.

The user interface unit 230 may display a same user interface window asthe one displayed in the previous normal mode. Specifically, when theuser interface unit 230 displays the first interface window, the userinterface unit 230 may display the same user interface window as the onedisplayed before the display device 200 entered into one mode between asleep mode and an off mode. For example, if the control device 200entered into the sleep mode or the off mode while the user interfaceunit 230 displays the user interface window for controlling a TV screen,the user interface unit 230 may display the user interface window forcontrolling the TV screen which was displayed in the first communicationmode when the control device 200 operates in the first communicationmode again.

The user interface unit 230 receives a control command. Specifically,the user interface unit 230 may receive the control command forcontrolling the broadcast receiver 100 via the user interface window asdescribed above.

The user interface unit 230 may display information useful for a user.Specifically, the user interface unit 230 may display information whichis received via the first communication interface unit 210 and will beuseful for the user.

The storing unit 240 may store a plurality of user interface windowsaccording to the type of communication mode. The storing unit 240 maystore information on the user interface window displayed by the userinterface unit 230 before entering into the at least one mode betweenthe sleep mode and the off mode by the control device 200. The storingunit 240 may store information received from the first communicationinterface unit 210. Such storing unit 240 may be in the form of aninternal and/or an external storing medium, for example, a RemovableDisk including a USB memory and a Web server via a network. The userinterface window according to the communication mode may be provided bythe broadcast receiver 100.

The state determination unit 250 may determine a communication mode ofthe control device 200. Specifically, when the state determination unit250 determines that the control device 200 is in the first communicationmode, the state determination unit 250 may communicate with thebroadcast receiver 100 via the bi-directional wireless communication,or, if the control device 200 is in the normal mode. Conversely, whenthe state determination unit 250 determines that the control device 200may not communicate with the broadcast receiver 100 via thebi-directional wireless communication, or, if the control device 200 isin the off-mode, the sleep-mode, and the wake-up mode, the statedetermination unit 250 determines that the control device 200 is in thesecond communication mode.

Herein, the off-mode is a state where a power of the control device 200is off, the sleep-mode is a state where the bi-directional wirelesscommunication is stopped in order to reduce a battery consumption, thewake-up mode is a process of re-operating the stopped bi-directionalwireless communication, and a normal mode is a state where Wi-Fi betweenthe control device 200 and the broadcast receiver 100 is connected. Thenormal mode may include a TV mode for controlling a TV, such as the oneillustrated in FIG. 4, a VTR mode for controlling a VTR, such as the oneillustrated in FIG. 5, and a search mode for an internet search.

The state determination unit 250 may determine a communication mode ofthe control device 200 according to a selected communication mode by auser via the user interface unit 230. Specifically, although the controldevice 200 may communicate in the first communication mode, the statedetermination unit 250 may determine a communication mode of the controldevice 200 as the second communication mode if the user wants thecontrol device 200 to operate in the second communication mode.

The control unit 260) controls each configuration of the control device200. Specifically, the control unit 260 may determine an operation modeof the control device 200 via the state determination unit 250 andcontrol the user interface unit 230 so that the user interface windowmay be displayed according to the determined operation mode.

If the control device unit 260 receives a request for changing acommunication mode from a user via the user interface unit 230, thecontrol unit 260 may control the user interface unit 230 so that theuser interface window may be displayed according to the requestedcommunication mode.

In addition, if the control unit 260 receives a control command of thebroadcast receiver 100 from a user, the control unit 260 may transmitthe control command according to the current communication mode.Specifically, when the control device 200 is in the first communicationmode, the control unit 260 may control the first communication interfaceunit 210 so that the control command input via the bi-directionalwireless communication may be transmitted. In addition, when the controldevice 200 is in the second communication mode, the control unit 260 maycontrol the second communication interface unit 220 so that the controlcommand input via the unidirectional wireless communication may betransmitted.

In case where the control device 200 has not been operated for a longtime, or, in case where the control device 200 is in the sleep mode, thecontrol unit 260 may control the first communication interface unit 210so that the first communication mode may not be in a communication ablestate.

In case where the control unit 260 receives information from thebroadcast receiver 100, the control unit 260 may control the userinterface unit 230 so that the received information may be displayedwith the user interface window corresponding to the current operationmode. Specifically, the broadcast receiver 100 may transmit information(for example: channel information, current volume, playing time, leftplaying time, current time, and Electronic Program Guide) which will beuseful for a user. Thus, the control unit 260 may control the userinterface unit 230 so that the information may be displayed on the userinterface window according to the current operation mode. The receivedinformation related to the services may be displayed continuously,displayed according to a predetermined period, or displayed according tothe user's control.

Accordingly, the control device 200 according to an exemplary embodimentmay control the broadcast receiver 100 by using the unidirectionalwireless communication even when bi-directional wireless communicationis impossible, thereby enhancing a user convenience. In addition, sincethe control device 200 displays the optimized user interface windowaccording to a communication mode, the user may control of the broadcastreceiver more conveniently.

In the description of FIG. 1, the control device 200 is described tocontrol only one broadcast receiver 100, but the control device 200 maycontrol a plurality of broadcast receivers, which will be described inthe following description with reference to FIG. 2.

FIG. 2 is a diagram illustrating an example of a home network system1000 according to an exemplary embodiment.

Referring to FIG. 2, the control device 200 according to FIG. 1 is aremote control and may communicate with a plurality of broadcastreceivers in the home network such as a TV 100-1, a BDP (Blue-ray DiskPlayer, 100-2) and a HTS 100-3 in a unidirectional wirelesscommunication and a bi-directional wireless communication.

Accordingly, if the control device 200 operates in the normal mode, thecontrol device 200 may control the plurality of broadcast receivers byusing the bi-directional wireless communication. If the control device200 operates in the sleep mode and the wake-up mode, the control device200 may control the broadcast receiver by using the unidirectionalwireless communication. For example, if a user wakes up the controldevice 200 which has entered into a sleep mode, the control device 200may transmit a control command to the TV 100-1 by using theunidirectional wireless communication when the controlled device was theTV 100-1. In addition, when the controlled device was the BDP 100-2, thecontrol device 200 may transmit a control command to the BDP 100-2 byusing the unidirectional wireless communication.

In the description of FIG. 2, the control device 200 controls abroadcast receiver connected to the TV 100-1 in the bi-directionalwireless communication and the unidirectional wireless communicationmode, but the control device 20X) may also control the Blu-ray DiskPlayer (BDP) 100-2 and the HTS 100-3.

FIG. 2, illustrates three components or broadcast receivers in the homenetwork as an example, but there is no limit to the number of thebroadcast receivers which may be connected in the home network. Inaddition, in the description of an exemplary embodiment, the controldevice 200 is described as a device controlling only the broadcastreceiver 100, but the control device 200 may be used to control anynumber of devices in the home network capable of communicating in theunidirectional wireless communication and the bi-directional wirelesscommunication.

FIGS. 3 to 5 are views illustrating a variety of examples of the userinterface windows which may be displayed on the control device 200.

Specifically, FIG. 3 is a view illustrating an example of the userinterface window where a user selects a communication mode.

Referring to FIG. 3, the user interface window 300 includes a firstregion 320 where the user selects a communication mode. Herein, a‘general mode’ represents the second communication mode, and an‘exclusive mode’ represents the first communication mode. By using aslide bar as illustrated in FIG. 3, the user may convert thecommunication mode from the second communication mode into the firstcommunication mode.

In FIG. 3, only regions where a user selects the communication mode areillustrated, but regions having a simple remote control shape (forexample, a channel up-down and a volume up-down) may be alsoillustrated.

On the other hand, if the control device 200 e wakes-up and operates inthe first communication mode, or the user converts the secondcommunication mode into the first communication mode via the userinterface window illustrated in FIG. 3, the user display window asillustrated in FIG. 4 may be displayed.

FIG. 4 and FIG. 5 are views illustrating an example of the userinterface window displayed on the user interface unit 130 if the controldevice 200 operates in the first communication mode.

Referring to FIG. 4, the user interface window 400 includes the firstregion 410 displaying a TV mode which is a current operation mode andthe second region 420 for receiving a control command for the TV from auser.

When the control device 200 controls the VTR device instead of the TV,the user interface window 500 may be displayed as illustrated in FIG. 5.

Referring to FIG. 5, the user interface window 500 includes the firstregion 510 displaying the VTR which is the current operation mode andthe second region 520 for receiving the control command for the VTR fromthe user.

FIG. 6 is a flowchart describing a control method of the broadcastreceiver 100 according to an exemplary embodiment.

First, at operation S610 a communication mode of the control devicebetween the first communication mode using the bi-directional wirelesscommunication and the second communication mode using the unidirectionalwireless communication is determined. Specifically, if the controldevice 200 is in the sleep mode or the wake-up mode, the firstcommunication mode carrying out the bi-directional wirelesscommunication may be determined to be in a non-communication able state.If the control device 200 is in the normal mode, the first communicationmode may be determined to be in an operable state. These determinationsmay be selected by a user.

If the bi-directional wireless communication is determined to be in anon-operable state S620-N, the second user interface windowcorresponding to the second communication mode is displayed S630, and acontrol command is received via the displayed user interface window, andthen the received control command is transmitted S640 via theunidirectional wireless communication.

If the bi-directional wireless communication is determined to be in anoperable state S620-Y, the user interface window corresponding to thecurrent operation mode is displayed S650, and the control command isreceived via the displayed user interface window and then the receivedcontrol command is transmitted via the bi-directional wirelesscommunication S660.

Therefore, the method of controlling the broadcast receiver according toan exemplary embodiment may control the broadcast receiver by using theunidirectional wireless communication even when bi-directional wirelesscommunication is impossible, thereby enhancing a user convenience. Themethod of controlling the broadcast receiver as illustrated in FIG. 6may be carried out on the control device having a configuration of FIG.1 as well as on the broadcast receiver having other configurations.

The foregoing exemplary embodiments and advantages are merely exemplaryand are not to be construed as limiting the exemplary embodiments. Thepresent teaching can be readily applied to other types of apparatuses.Also, the description of the exemplary embodiments is intended to beillustrative, and not to limit the scope of the claims, and manyalternatives, modifications, and variations will be apparent to thoseskilled in the art.

What is claimed is:
 1. A control device for use with a displayapparatus, the control device comprising: a user interface unitconfigured to receive a user input for controlling the displayapparatus; a bi-directional communication interface; a uni-directionalcommunication interface; and a controller, wherein the control deviceoperates in one of a plurality of modes including a normal mode in whichthe bi-directional communication interface is in an active state, asleep mode in which the bi-directional communication interface is in aninactive state, and a wake-up mode in which a state of thebi-directional communication interface changes from the inactive stateto the active state, wherein the controller is configured to: receive auser input for waking up the control device via the user interface unitwhile the control device is in the sleep mode, in response receiving theuser input for waking up the control device, change a mode of thecontrol device from the sleep mode to the normal mode via the wake-upmode, while the control device is in the wake-up mode, control thecontrol device to communicate with the display apparatus via theuni-directional communication interface, after the mode of the controldevice is changed to the normal mode, control the control device tocommunicate with the display apparatus via the bi-directionalcommunication interface instead of the uni-directional communicationinterface, and if no user input is received via the user interface unitfor a predetermined time while the control device is in the normal mode,change a mode of the control device from the normal mode to the sleepmode and communicate with the display apparatus via the uni-directionalcommunication interface instead of the bi-directional communicationinterface.
 2. The control device as claimed in claim 1, wherein thebi-directional communication interface corresponds to a Bluetooth (BT)module and the uni-directional communication interface corresponds to aninfrared (IR) module configured to transmit IR.
 3. The control device asclaimed in claim 1, wherein the control device further comprises adisplay, wherein the controller is further configured to: display a userinterface (UI) for receiving a user input to change a uni-directionalcommunication mode to a bi-directional communication mode.
 4. Thecontrol device as claimed in claim 1, wherein the controller is furtherconfigured to: based on a user input being received while the controldevice is connected to the display apparatus through the bi-directionalcommunication interface, identify a type of the user input, and transmita signal corresponding to the user input to the display apparatusthrough one of the bi-directional and uni-directional communicationinterfaces based on the type of the user input.
 5. The control device asclaimed in claim 1, wherein the controller is configured to, based on auser input being received after the connection is disconnected, transmita signal corresponding to the user input to the display apparatusthrough the uni-directional communication interface.
 6. A display systemcomprising: a display apparatus; and a control device for use with thedisplay apparatus, wherein the control device comprises: a userinterface unit configured to receive a user input for controlling thedisplay apparatus; a bi-directional communication interface; auni-directional communication interface; and a controller, wherein thecontrol device operates in one of a plurality of modes including anormal mode in which the bi-directional communication interface is in anactive state, a sleep mode in which the bi-directional communicationinterface is in an inactive state, and a wake-up mode in which a stateof the bi-directional communication interface changes from the inactivestate to the active state, wherein the controller is configured to:receive a user input for waking up the control device via the userinterface unit while the control device is in the sleep mode, inresponse receiving the user input for waking up the control device,change a mode of the control device from the sleep mode to the normalmode via the wake-up mode, while the control device is in the wake-upmode, control the control device to communicate with the displayapparatus via the uni-directional communication interface, after themode of the control device is changed to the normal mode, control thecontrol device to communicate with the display apparatus via thebi-directional communication interface instead of the uni-directionalcommunication interface, and if no user input is received via the userinterface unit for a predetermined time while the control device is inthe normal mode, change a mode of the control device from the normalmode to the sleep mode and communicate with the display apparatus viathe uni-directional communication interface instead of thebi-directional communication interface.
 7. A control device for use witha display apparatus, the control device comprising: a user interfaceunit configured to receive a user input for controlling the displayapparatus; a bi-directional communication interface; a uni-directionalcommunication interface; and a controller, wherein the controller isconfigured to: receive a user input for waking up the control device viathe user interface unit while the bi-directional communication interfaceis inactive state, in response receiving the user input for waking upthe control device, control to change the state of the bi-directionalcommunication interface from inactive state to active state, while thestate of the bi-directional communication interface is being changedfrom inactive state to active state, control the control device tocommunicate with the display apparatus via the uni-directionalcommunication interface, and after the state of the bi-directionalcommunication interface is changed to active state, control the controldevice to communicate with the display apparatus via the bi-directionalcommunication interface instead of the uni-directional communicationinterface, if no user input is received via the user interface unit fora predetermined time while the bi-directional communication interface isactive state, change the state of the bi-directional communicationinterface from active state to inactive state and communicate with thedisplay apparatus via the uni-directional communication interfaceinstead of the bi-directional communication interface.
 8. A displaysystem comprising: a display apparatus; and a control device for usewith the display apparatus, wherein the control device comprises: a userinterface unit configured to receive a user input for controlling thedisplay apparatus; a bi-directional communication interface; auni-directional communication interface; and a controller, wherein thecontroller is configured to: receive a user input for waking up thecontrol device via the user interface unit while the bi-directionalcommunication interface is inactive state, in response receiving theuser input for waking up the control device, control to change the stateof the bi-directional communication interface from inactive state toactive state, while the state of the bi-directional communicationinterface is being changed from inactive state to active state, controlthe control device to communicate with the display apparatus via theuni-directional communication interface, after the state of thebi-directional communication interface is changed to active state,control the control device to communicate with the display apparatus viathe bi-directional communication interface instead of theuni-directional communication interface, and if no user input isreceived via the user interface unit for a predetermined time while thebi-directional communication interface is active state, change the stateof the bi-directional communication interface from active state toinactive state and communicate with the display apparatus via theuni-directional communication interface instead of the bi-directionalcommunication interface.